BIOLARGO, INC.
BLGOAbout the company
BioLargo, Inc. invents, develops, and commercializes various platform technologies in the United States. The company's technologies solve challenging environmental problems comprising per- and polyfluoroalkyl substances (PFAS) water contamination; advanced water and wastewater treatment; industrial odor and volatile organic compounds control, air quality control, and infection control; and myriad environmental remediation. It provides full-service environmental engineering, battery energy storage, and advanced antimicrobial medical device platforms.
Investment snapshot
Positive
0
BUY / PASS
Neutral / negative
2 / 14
NEUTRAL / FAIL
Median fair value
—
No comparable estimates
Models with upside
0 / 17
Positive margin of safety
Key risk
No clean pass — all 16 investors flag at least one profitability criterion
Framework analysis
| Verdict | Meaning |
|---|---|
| BUY | Positive purchase signal: the framework's buy requirements are met. |
| PASS | The company clears the framework's checklist or screen, but the framework does not produce a buy signal. For valuation frameworks this often means margin of safety is missing, insufficient, or unavailable; some screen-only frameworks have no intrinsic-value BUY state. |
| NEUTRAL | Neither a positive nor negative conclusion. It does not mean to hold an existing position. |
| FAIL | The company does not clear the framework's requirements. |
| Ranked | Ranked strategies do not use PASS: selected cohort is BUY, outside the cohort is FAIL, and unranked is NEUTRAL. |
Current investor scores use trailing 12-month flows and the latest balance sheet where supported. Multi-year and EPS tests retain annual history; each framework shows its financial basis below. Intrinsic values use annual financials.
| Metric | Graham Defensive Value | Buffett Quality Compounder | Lynch GARP | Greenblatt Magic Formula | Piotroski F-Score | Dreman Contrarian Value | Munger Quality Focus | Pabrai Dhandho Framework | Akre Three-Legged Stool | Marks Risk-Aware Value | Ackman Activist Value | Templeton Global Bargain Hunter | Sleep Scale Economies Shared | Asness Systematic Factors | Neff Low-P/E Total Return | Schloss Asset-Value Discipline | O'Shaughnessy Systematic Factor Composite |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Verdict | FAIL | FAIL | FAIL | Not ranked | FAIL | FAIL | FAIL | FAIL | FAIL | FAIL | FAIL | FAIL | FAIL | NEUTRAL | FAIL | FAIL | NEUTRAL |
| Score | |||||||||||||||||
| Analysis | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… | Checking access… |
| Intrinsic Value (annual) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Margin of Safety | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Financial Basis | TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Annual history · FY 2025 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 · TTM ended 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 · Balance sheet at 2026-06-30 · TTM ended 2026-06-30 vs 2025-06-30 · TTM ended 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 Latest source filing: 2026-03-04 Score computed: 2026-11-14 | Annual history · FY 2025 Latest source filing: 2026-03-04 Score computed: 2026-11-14 | Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Market data at 2026-11-01 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Qualitative assessment · Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Qualitative assessment · Annual history · FY 2025 Latest source filing: 2026-03-04 Score computed: 2026-11-14 | Annual history · FY 2025 · Qualitative assessment · Balance sheet at 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 · Qualitative assessment Latest source filing: 2026-03-04 Score computed: 2026-11-14 | Annual history · FY 2025 · TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Market data at 2026-11-01 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 · Price history 2025-01-01–2026-11-01 · Balance sheet at 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 · Qualitative assessment Latest source filing: 2026-03-04 Score computed: 2026-11-14 | TTM ended 2026-06-30 · Balance sheet at 2026-06-30 · Price history 2025-01-01–2026-11-01 · Annual history · FY 2025 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | Annual history · FY 2025 Latest source filing: 2026-03-04 Score computed: 2026-11-14 | Annual history · FY 2025 · Balance sheet at 2026-06-30 Latest source filing: 2026-08-14 Score computed: 2026-11-14 | TTM ended 2026-06-30 · Annual history · FY 2025 · Price history 2025-01-01–2026-11-01 Latest source filing: 2026-08-14 Score computed: 2026-11-14 |
Where It Passes
Where It Falls Short
- Profitability0% pass✓ 2✗ 33▾
No clean pass — all 16 investors flag at least one profitability criterion
Positive EPS (10 years)0/20 years positive✗GrahamPositive EPS every year for 10 yearsEPS Growth (3-yr avg, 10-yr window)✗Graham>= 33% growthNet Income Positive (10+ years)0/20 years positive✗BuffettPositive every year for 10+ yearsROE (up to 5-year arithmetic mean)-149.2%✗Buffett> 15% arithmetic mean (app rule)Operating Margin (10-yr trend)-191.3% (latest)✓BuffettStable or rising over 10 yearsFree Cash Flow Proxy$-9.5M✗BuffettPositive and growingEarnings Variance (10-yr CoV)✗BuffettCoV < 0.3Retained Earnings Effectiveness✗Buffett$1 retained -> > $1 market value createdBasic earnings-growth PEG (dividends excluded)✗Lynch< 1.0 (ideally < 0.5)3-5 Year EPS CAGR✗Lynch15-30% (Fast Grower); > 0% to passROEN/A (negative equity)✗Lynch> 15%EBIT / Enterprise Value-74.6%✗Greenblatt> 10%Earnings Yield + ROC AssessmentEY=-74.6%, ROC=N/A (invested capital <= 0)✗GreenblattBoth EY > 10% and ROC > 25%Net Income / Total Assets-182.76%✗PiotroskiROA > 0ROA Change YoY-41.35% -> -182.76% (delta: -141.41%)✗PiotroskiCurrent ROA > Prior ROA(CFO / Total Assets) vs ROACFO/Assets=-99.83%, ROA=-182.76%✓PiotroskiCFO/Assets > ROAGross Margin Change YoY44.2% -> 43.9%✗PiotroskiImproved YoYPre-Tax Income / Revenue-195.6%✗Dreman>= 8%Net Income / Shareholders' Equity✗Dreman> 12%Margin of SafetyP/B=5.5x✗PabraiP/B < 1.5 or P/E < 15Return on Equity-164.3% (3-yr avg)✗AkreROE > 20% (3-year avg)Discount to Intrinsic Value✗Marks>= 20% below intrinsic valuePositive Net Income Frequency0/16 years positive✗MarksPositive net income in >= 7 of last 10 yearsOperating Income / Revenue-443.9%✗Ackman>= 15%Net Income / Shareholders Equity✗Ackman>= 15%5-Year EPS CAGR✗Templeton> 0% (5-year EPS CAGR)Operating Margin Trend-37.4% (2023) -> -191.3% (2025)✗TempletonNon-negative operating-margin trend over 3 yearsRevenue growth vs. gross and operating margin trendgross margin 50.3% -> 43.9%, operating margin -37.4% -> -191.3%✗SleepRevenue rising; gross margin flat or falling; operating margin holdingNet income / market capitalization-80.21%; #5280/6340 (top 83.3%)✗AsnessTop 30% of eligible cross-section✗OshaughnessyTop 10% of eligible cross-sectionGross profit / total assets+24.49%; #1763/3702 (top 47.6%)✗AsnessTop 30% of eligible cross-sectionNet income / positive book equity✗AsnessTop 30% of eligible cross-sectionNegative 5-year standard deviation of ROA-0.7208; #5143/5884 (top 87.4%)✗AsnessTop 30% of eligible cross-section3-5 Year Diluted EPS CAGR✗Neff7%-20% annualizedPositive Diluted-EPS Years0/6 years positive✗Schloss>= 70% positive over 5-10 observed years (app rule) - Debt & Leverage0% pass✓ 1✗ 14▾
No clean pass — all 12 investors flag at least one debt & leverage criterion
LT Debt vs Net Current AssetsLT Debt $2.1M vs NCA $0.1M✗GrahamLT Debt <= Net Current AssetsDebt/Equity & Interest CoverageD/E: N/A (negative equity), IC: -22.5x✗BuffettD/E < 0.5 AND Interest Coverage > 5xTotal Debt / EquityN/A (negative equity)✗Lynch< 0.33Cash - Long-term Debt$1.8M✓LynchPositive preferredLT Debt / Total Assets Change10.26% -> 25.02%✗PiotroskiDecreased YoYCurrent Assets / Current Liabilities0.73✗Dreman> 1.5✗SchlossCurrent ratio >= 1.50x (app cutoff)Total Debt / Shareholders' Equity✗Dreman< 0.8✗Templeton< 1.0 (fixed cap; proxy for below-sector-median leverage)✗SchlossD/E < 1.00xDebt LevelsN/A (non-positive equity)✗MungerDebt/Equity < 0.5✗AkreDebt/Equity < 0.3Interest Coverage & Debt/EBITDAIC=-27.5x, D/EBITDA=N/A (D&A unavailable)✗MarksInterest Coverage > 3x; Debt/EBITDA < 4xTotal Debt / Shareholders Equity✗Ackman<= 1.0Negative debt-to-equity (higher means less debt)✗AsnessTop 30% of eligible cross-section - Valuation0% pass✓ 1✗ 27▾
No clean pass — all 13 investors flag at least one valuation criterion
Price / 3-yr avg EPS✗Graham<= 15xPrice-to-Book Ratio5.5x✗Graham<= 1.5xP/E x P/B✗Graham<= 22.5Basic earnings-growth PEG (dividends excluded)✗Lynch< 1.0 (ideally < 0.5)EBIT / Enterprise Value-74.6%✗Greenblatt> 10%Earnings Yield + ROC AssessmentEY=-74.6%, ROC=N/A (invested capital <= 0)✗GreenblattBoth EY > 10% and ROC > 25%Price / EPS✗Dreman< 12x✗Templeton< 12x (fixed ceiling; proxy for the market's cheapest 40%)Price / (CFO / Shares)N/A (negative CFPS)✗Dreman< 8xPrice / Book Value per Share5.5x✗Dreman< 1.2x✗Templeton< 1.5x✗SchlossP/B <= 0.80x (app cutoff)Valuation Reasonableness✗MungerP/E < 25 or Owner Earnings Yield > 5%P/E or FCF Yield✗PabraiP/E < 15 or FCF Yield > 10%P/B or P/E vs. Historical AverageP/B=5.5x✗MarksP/E < 15 or P/B < 2.0Discount to Intrinsic Value✗Marks>= 20% below intrinsic valuePrice / FCF per Share✗Ackman<= 25Price vs. Trailing Low117% of trailing low ($0.06)✓Templeton<= 120% of trailing low (certified split-adjusted live window)Net income / market capitalization-80.21%; #5280/6340 (top 83.3%)✗AsnessTop 30% of eligible cross-section✗OshaughnessyTop 10% of eligible cross-sectionPositive book equity / market capitalization-0.0791; #5672/6449 (top 88.0%)✗AsnessTop 30% of eligible cross-sectionPrice / Diluted EPS✗NeffP/E <= 15x (app proxy for a P/E 40%-60% below the market)(EPS CAGR % + Dividend Yield %) / P/E✗Neff> 0.7 (Neff's published traditional edge)Price / Tangible Book Value per Share5.54x✗SchlossP/TBV <= 1.00x (app cutoff)Book Value per Share Change-21.8%✗SchlossLatest BVPS >= earliest BVPS over >= 3 years (app rule)Revenue / market capitalization+0.1743; #3904/5247 (top 74.4%)✗OshaughnessyTop 10% of eligible cross-section(Operating cash flow - capex) / market capitalization✗OshaughnessyTop 10% of eligible cross-sectionTrailing six-month price return through the evaluation date-50.04%; #5159/6202 (top 83.2%)✗OshaughnessyTop 10% of eligible cross-section - Cash Flow0% pass✓ 1✗ 11▾
No clean pass — all 10 investors flag at least one cash flow criterion
Free Cash Flow Proxy$-9.5M✗BuffettPositive and growingFCF Positive and Growing$-4.3M✗LynchPositive and growingOperating Cash Flow$-8.3M✗PiotroskiCFO > 0(CFO / Total Assets) vs ROACFO/Assets=-99.83%, ROA=-182.76%✓PiotroskiCFO/Assets > ROAPrice / (CFO / Shares)N/A (negative CFPS)✗Dreman< 8xP/E or FCF Yield✗PabraiP/E < 15 or FCF Yield > 10%FCF Positive0/2 years FCF positive✗MarksPositive FCF in majority of recent years(OCF - CapEx) / Market Cap✗Ackman>= 4%Price / FCF per Share✗Ackman<= 25Positive Operating Cash Flow frequency0/16 years positive✗SleepPositive OCF in >= 70% of available yearsOperating Cash Flow - Capital Expenditures✗Neff> $0 (app proxy for a strong fundamental case)(Operating cash flow - capex) / market capitalization✗OshaughnessyTop 10% of eligible cross-section - Growth0% pass✓ 2✗ 11▾
No clean pass — all 8 investors flag at least one growth criterion
EPS Growth (3-yr avg, 10-yr window)✗Graham>= 33% growthBasic earnings-growth PEG (dividends excluded)✗Lynch< 1.0 (ideally < 0.5)3-5 Year EPS CAGR✗Lynch15-30% (Fast Grower); > 0% to passInventory Growth vs Revenue GrowthInv: -31.8% vs Rev: -70.9%✗LynchInventory growth < Revenue growthEPS Growth Direction✗DremanPositive over recent yearsEPS CAGR✗Dreman> 5% annualizedPositive Net Income Frequency0/16 years positive✗MarksPositive net income in >= 7 of last 10 years3yr Median Revenue Growth45.4%✓Ackman>= 5%Positive EPS Growth Frequency1/1 years with positive EPS growth✗AckmanPositive EPS growth in >= 3 of last 5 years5-Year EPS CAGR✗Templeton> 0% (5-year EPS CAGR)Revenue growth vs. gross and operating margin trendgross margin 50.3% -> 43.9%, operating margin -37.4% -> -191.3%✗SleepRevenue rising; gross margin flat or falling; operating margin holding5-year Revenue CAGR26.1%✓SleepCAGR > 7%3-5 Year Diluted EPS CAGR✗Neff7%-20% annualized - Efficiency0% pass✗ 11▾
All 8 investors flag BLGO's efficiency
Current Ratio0.73✗Graham>= 2.0ROIC (3-5 yr avg)-533.9%✗Buffett> 10%ROIC - WACC-543.9%✗BuffettPositive (WACC = 10%)EBIT / (NWC + Net Fixed Assets)N/A (invested capital <= 0)✗Greenblatt> 25%Current Ratio Change YoY2.70 -> 1.01✗PiotroskiIncreased YoYRevenue / Total Assets Change YoY1.69x -> 0.93x✗PiotroskiImproved YoYCurrent Assets / Current Liabilities0.73✗Dreman> 1.5Return on Invested CapitalN/A (non-positive invested capital)✗Munger> 15%ROIC (high and growing)FY2023: ROIC=-50.3%; FY2024: ROIC=-35.0%; FY2025: ROIC=-266.6%✗AkreLatest 3 consecutive FYs: ROIC > 15% in eachReinvestment Rate x ROICN/A (non-positive net income)✗AkreReinvestment Rate * ROIC > 10%ROIC (5-year)0/5 years above 12% (latest -266.6%)✗SleepROIC > 12% in a majority of years - Verdicts0% pass✗ 14▾
Split decision: 14 FAIL · 2 NEUTRAL
Overall verdict✗GrahamFAIL (0/9)✗BuffettFAIL (1/9)✗LynchFAIL (1/7)•GreenblattNot ranked✗PiotroskiFAIL (F-Score 1)✗DremanFAIL (0/11)✗MungerFAIL (0/4)✗PabraiFAIL (0/3)✗AkreFAIL (0/6)✗MarksFAIL (0/5)✗AckmanFAIL (2/9)✗TempletonFAIL (2/8)✗SleepFAIL (1/6)•AsnessNEUTRAL (Not ranked)✗NeffFAIL (1/6)✗SchlossFAIL (0/7)•OshaughnessyNEUTRAL (Not ranked)
Business & financials
Financial snapshot: annual FY 2025. Current investor scores may use newer quarterly data.
Company Profile
Financial Snapshot
Shareholder Return
Fiscal 2025
Issued 6.1% of shares last year, 8.2% issued over two.
- Buybacks
- —
- Dividends
- —
Company Financials
Latest TTM and quarters alongside annual years
TTM sums four consecutive quarters and uses the latest quarter-end balances. Quarter columns show three-month results; annual columns show full-year totals. Growth compares the same period a year earlier. EPS is not added for TTM; full-year ratios are blank for quarters.
The latest annual period end is unavailable. Showing the latest fiscal cycle’s quarters; quarter and annual columns may overlap. Quarterly shows the full quarter history.
| Metric | TTM · 2026-06-30 2025-07-01 – 2026-06-30 Sources · derived quarter valuesDerived from cumulative filings: operating cash flow, revenue, net income, operating income, gross profit, ebit, interest expense. | Q2 FY 2026 2026-04-01 – 2026-06-30 Sources · derived quarter valuesDerived from cumulative filings: operating cash flow. | Q1 FY 2026 2026-01-01 – 2026-03-31 Sources | FY 2025Sources
| FY 2024Sources
| FY 2023Sources
| FY 2022Sources
| FY 2021Sources
|
|---|---|---|---|---|---|---|---|---|
| Market Cap | $23.4Mcurrent | -- | -- | $57.6Mest. | $75.3Mest. | $62.1Mest. | $65.1Mest. | $69.1Mest. |
| Revenue | $4.1M↓71% | $1.2M↓55% | $1.1M↓66% | $7.8M↓56% | $17.8M↑45% | $12.2M↑108% | $5.9M↑132% | $2.5M |
| Operating Income | -$18.1M↓186% | -$3.7M↓107% | -$3.2M↓72% | -$14.9M↓243% | -$4.3M↑5% | -$4.6M↑15% | -$5.4M↑20% | -$6.8M |
| Net Income | -$18.8M↓185% | -$4.0M↓113% | -$3.4M↓77% | -$15.2M↓249% | -$4.3M↑6% | -$4.6M↑9% | -$5.1M↑26% | -$6.9M |
| EPS (Diluted) | -- | -- | -- | -- | -- | -- | -- | $-0.03 |
| Gross Margin | 40.0%↓12% | 54.1%↑6% | 41.1%↓10% | 43.9%↓1% | 44.2%↓12% | 50.3%↑4% | 48.6%↑11% | 43.6% |
| Operating Margin | -443.9%↓884% | -298.7%↓360% | -287.4%↓404% | -191.3%↓685% | -24.4%↑35% | -37.4%↑59% | -91.6%↑66% | -267.8% |
| ROE | 1014.6%↑1447% | — | — | -375.8%↓665% | -49.1%↑28% | -67.9%↑35% | -105.2%↑29% | -148.2% |
| Total Debt | $311.0K↓22% | $311.0K↓22% | $336.0K↓21% | $360.0K↓61% | $912.0K↑157% | $355.0K↑5% | $337.0K↓32% | $494.0K |
| Shareholders' Equity | -$1.9M↓121% | -$1.9M↓121% | $1.8M↓77% | $4.0M↓54% | $8.9M↑29% | $6.8M↑40% | $4.9M↑5% | $4.7M |
| Current Ratio | 0.73↓67% | 0.73↓67% | 1.10↓48% | 1.01↓63% | 2.70↑15% | 2.35↑17% | 2.00↑53% | 1.31 |
| Debt / Equity | -0.17↓468% | -0.17↓468% | 0.19↑235% | 0.09↓14% | 0.10↑99% | 0.05↓25% | 0.07↓35% | 0.11 |
| Operating Cash Flow | -$10.3M↓38% | -$3.1M↓44% | -$2.9M↓59% | -$8.3M↓159% | -$3.2M↓36% | -$2.4M↑14% | -$2.8M↑30% | -$3.9M |
| Free Cash Flow | -- | -- | -- | -- | -- | -- | -- | -- |
Score history
Historical Score Timeline
Industry peers
Industry Peers
Similar companies in Chemicals
BLGO vs Peers — Financial Grading
| Company | Market Cap | Price | Revenue | Net Income | ROE | D/E | Op. Margin | Curr. Ratio | Graham | Buffett | Lynch | Greenblatt | Piotroski | Dreman |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EIDP, Inc.CTA-PB | $46.8B | $54.21 | — | — | — | — | — | — | 2/9 | 5/9 | 2/7 | 0/3 | F-Score 1 | 4/11 |
| INTERNATIONAL FLAVORS & FRAGRANCES INCIFF | $20.3B | $81.16 | $10.9B | $359.0M | -2.5% | 0.42 | -3.5% | 1.42 | 3/9 | 0/9 | 2/7 | 0/3 | F-Score 6 | 3/11 |
| CF Industries Holdings, Inc.CF | $18.3B | $125.09 | $7.1B | $1.8B | 37.2% | 0.66 | 32.5% | 3.37 | 3/9 | 4/9 | 5/7 | 3/3 | F-Score 8 | 8/11 |
| RPM INTERNATIONAL INC/DE/RPM | $13.2B | $103.73 | $7.9B | $661.4M | 20.0% | 0.77 | — | 1.68 | 3/9 | 2/9 | 3/7 | 1/3 | F-Score 6 | 7/11 |
| Element Solutions IncESI | $8.0B | $33.08 | $2.6B | $190.8M | 7.1% | 0.61 | 13.4% | 3.68 | 2/9 | 2/9 | 1/7 | 1/3 | F-Score 5 | 6/11 |
| NEWMARKET CORPNEU | $6.5B | $709.19 | $2.7B | $418.7M | 23.5% | 0.50 | 20.0% | 2.53 | 4/9 | 6/9 | 2/7 | 1/3 | F-Score 5 | 5/11 |
| HEXCEL CORP /DE/HXL | $6.0B | $79.46 | $1.9B | $109.4M | 8.7% | 0.79 | 9.1% | 2.26 | 2/9 | 2/9 | 3/7 | 0/3 | F-Score 6 | 4/11 |
| ICL Group Ltd.ICL | $5.8B | $4.52 | $7.2B | $226.0M | 3.8% | 0.46 | 8.1% | 1.33 | 5/9 | 4/9 | 2/7 | 0/3 | F-Score 4 | 5/11 |